Display image in a popupwindow

I have an image in my Screenshots tab that I want to display to a the user at a certain point in the program. I would prefer a popupwindow. Any ideas?

UI Vision itself can not display it. As workaround I would use the XRUN command to start (any) image editor with command line e. g.

XRUN | c:\folder\paint.exe | c:\uivision\screenshots\_lastscreenshot.png